[media] DocBook: Remove V4L generic error description for ioctl()

V4L ioctl function descripton also has a generic error chapter.
Remove it, as it is now obsoleted by a general, multi-API generic
error descriptions.

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/Documentation/DocBook/media/v4l/media-func-ioctl.xml b/Documentation/DocBook/media/v4l/media-func-ioctl.xml
index e0ee285..39478d0 100644
--- a/Documentation/DocBook/media/v4l/media-func-ioctl.xml
+++ b/Documentation/DocBook/media/v4l/media-func-ioctl.xml
@@ -64,6 +64,7 @@
 
   <refsect1>
     &return-value;
+
     <para>Request-specific error codes are listed in the
     individual requests descriptions.</para>
     <para>When an ioctl that takes an output or read/write parameter fails,